14 Articles Published

1. DEVELOPMENT OF COST EFFECTIVE CHASSIS DYNAMOMETER FOR ENGINE OUTPUT POWER MEASUREMENTS

Authors: A.AMAR MURTHY , GURUMURTHY. B.M , RAKESH. L , SUNEET SINGH PURI , VIKRAM HARIN HATTANGADY

Abstract: Measurement of output power from an engine is an important step in analysis of engine performance. Currently, dynamometers are used to measure the brake power of engines at varied loads. However, these devices are often expensive and sophisticated. Therefore there is a need to develop an extremely cost effective device for brake power measurement. In this work, a chassis dynamometer is designed and fabricated for testinga two wheeler vehicle. The drive axle weight is up to 800 kg. The dynamometer is primarily made out of mild steel and uses worn out car tires to function as rollers. The device is found to be extremely cost effective and reliable as compared to the existing dynamometers.

Keywords: Brake power, chassis dynamometer, engine performance.

Pages: 1 - 5 | DOI: 10.15224/978-1-63248-002-6-79

2. FLOW SIMULATION IN ABRASIVE WATER JET MACHINING OF GFRP COMPOSITE: THE EFFECT OF OPERATING PRESSURE AND STANDOFF DISTANCE ON KERF WIDTH

Authors: ANJAIAH D , DEEPAK D , YAGNESH SHARMA N

Abstract: Abrasive Water Jet (AWJ) machining is a relatively new nontraditional machine tool used in machining of fiber reinforced composite. The quality of machined surface depends on various operating and material parameters. In the present work the effect of operating pressure and distance of the tool tip from target called the standoff distance (SOD) on AWJ characteristics is simulated using computational fluid dynamics (CFD). Computational domain was modeled based on experimental results of machining on Glass Fiber Reinforced Polymer (GFRP) composite. CFD results are compared with experimental output. The chosen parameters were found to have significant influence on the kerf width of work piece in AWJ machining. The effect on flow velocity in the domain is analyzed for the jet flow consisting of the mixture of garnet abrasives and water. It is found that distribution of jet velocity increases radially on work piece with the increase of SOD as well as operating pressure that result in wideni

Keywords: Abrasive water jet machining, Jet velocity, GFRP composite, kerf width, operating pressure, standoff distance

Pages: 6 - 10 | DOI: 10.15224/978-1-63248-002-6-80

3. A NOVEL DESIGN OF LIGHTWEIGHT ALUMINUM TUBULAR CRASH-BOX FOR CRASHWORTHINESS APPLICATION

Authors: ABDEL MAGID HAMOUDA , FARIS TARLOCHAN , KHALIFA AL-KHALIFA , S.V. PERUMAL

Abstract: During a collision, the specific structures such as the frontal longitudinal and crash-box deforms plastically while absorbing substantial amount of kinetic energy. This energy absorbing characteristic has been designed in vehicles to reduce the severe injury of occupant. The design of such structures are very important because if these structures deform due to very high forces there is high risk to biomechanical damage of the vehicle occupants. Hence it is of upmost importance that the design of such structures maximizes the energy absorption while maintaining the peak force below an allowable threshold. The current work aims to design a new multi tube thin walled crash-box with these two crashworthiness performance measures being given much attention. The distance of the first plastic fold for the axial crushing was determined by simulation and this was used as a design input. This resulted in a near to ideal elastic-plastic behavior, increasing energy absorption and stable crushing

Keywords: Crashworthiness, Energy Absorption, Aluminum Tubes, Frontal Longitudinal

Pages: 11 - 15 | DOI: 10.15224/978-1-63248-002-6-81

4. INVESTIGATION OF LEAN TOOLS TO ENHANCE THE PRODUCTIVITY IN INDIAN MANUFACTURING SECTOR A CASE STUDY ON LAMINA SUSPENSION PRODUCTS LTD.

Authors: MANISH KUMAR , KUSHAL KUMAR , YAMAN ROHILLA

Abstract: The purpose of this work is to implement the lean manufacturing tools in Lamina Suspension Products Ltd. - an Indian manufacturing sector and develop a plan for reducing lead-times and increasing the output. Theincrease in lead-times due to undefined batch size and poor product flow is causing the manufacturer a loss in market share to its competitors and thus the challenge is to provide qualitative products with reduced lead time. Value stream mapping (VSM) – a lean tool is used to determine areas of potential improvement on the plant floor. The paper concentrates on the production line of main leaf spring. A current state map is developed and analyzed, to pin point areas that have potential for improvement. After analyzing the current map and discussing with the experts, a future state map is created to suggest ways to reduce lead-times and increase productivity/output. The map will include lean manufacturing methods to enhance the productivity and reduce the lead time.

Keywords: Lean manufacturing, Value stream mapping, Producitvity Improvement.

Pages: 16 - 20 | DOI: 10.15224/978-1-63248-002-6-82

5. THERMO-STRUCTURAL ANALYSIS OF HP STAGE GAS TURBINE BLADES HAVING HELICOIDAL COOLING DUCTS

Authors: SATISH SHENOY B , CHANDRAKANT R KINI , N. YAGNESH SHARMA

Abstract: In most of the practical gas turbines, the turbine blades of HP stage are usually too small to employ the turbine blade cooling techniques effectively. The growing need for effective blade cooling techniques is a direct consequence of the continuous quest for greater fuel economy. It is very well known that the thermal efficiency and power output of gas turbines increase with increasing turbine entry temperature (TET). The current TET level in advanced gas turbines is far above the melting point of the blade material. An attempt has been made in this paper to computationally analyze the thermo-structural analysis of HP stage turbine blade for effective cooling using innovative cooling passages within the blade. A helicoidal shaped duct has been analyzed corresponding to different cross section, diameters and pitch length. It is found from the analysis that helicoidal cooling duct of circular cross section of pitch length 6 mm radius 2 mm having turbulators (e/D = 0.08 and 0.75 mm rib t

Keywords: thermo-structural analysis, helicoidal cooling ducts, structural deformation

Pages: 21 - 24 | DOI: 10.15224/978-1-63248-002-6-83

6. INFLUENCE OF MACHINING PARAMETERS ON TOOL WEAR IN DRILLING OF GFRP COMPOSITES–TAGUCHI ANALYSIS AND ANOVA METHODOLOGY

Authors: LEWLYN .L.R. RODRIGUES

Abstract: Nowadays, the Fiber Reinforced Polymer (FRP) has replaced many of the mechanical components and this composite industry is experiencing significant growth. FRP’s also have replaced several traditional materials used in building, sporting equipment/appliances, automotive/aircraft parts, boat and canoe hulls, and bodies for recreational vehicles. The composites in general, offer many advantages over traditional materials: important among these are high strength to weight ratio, light weight, flexible design, parts consolidation, dimensional stability, corrosion resistance and low tooling costs. Since the composites are anisotropic in nature, machining them is a complex process especially with reference to drilling and milling. Therefore, during the dry drilling operation on composites, drilling induced damage drastically affects the performance of the drill tool. So, the present investigation is an attempt to study the effect of the drill process parameters like the spindle speed (1000,

Keywords: polymer composites, design of experiments, tool wear, analysis of variance.

Pages: 25 - 29 | DOI: 10.15224/978-1-63248-002-6-84

7. PROCESSING AND CHARACTERIZATION OF SICP REINFORCED FUNCTIONALLY GRADED AA 6061 ALUMINIUM METAL MATRIX COMPOSITES

Authors: B. C. PAI , E. JAYAKUMAR , MANJUNATH MAIYA U , NAGARAJA , RAMAKRISHNA VIKAS S , T. P. D. RAJAN

Abstract: Functionally graded materials (FGM) are advanced class of engineering materials in which location specific properties are made use in components of specific applications in a more economical and performance efficient ways. Functionally graded metal matrix composites (FGMMC) have graded distribution of reinforcements; whose volume fraction varies continuously in a component leading to a tailored microstructure with continuously changing properties. AA 6061 FGMMC with 10 wt% silicon carbide particles (SiCp), of 23 µm sizes, reinforced composite is processed by liquid metal stir casting method followed by vertical centrifugal casting to obtain the FGM ring. The SiCp due to their higher density than the matrix diffuse towards the outer periphery giving a graded structure. While the porosities, impurities and agglomerates with lower densities accumulate towards the inner periphery and can be removed by machining. Microscopic image analysis shows higher volume percentage of SiC near the oute

Keywords: Functionally graded materials, Metal matrix composites, Stir casting, Silicon carbide

Pages: 30 - 34 | DOI: 10.15224/978-1-63248-002-6-85

8. NUMERICAL AND PARAMETRIC STUDY OF A CENTRIFUGAL PUMP EFFECT OF BLADE NUMBER AND VOLUTE SHAPE

Authors: AMIRREZA MAHMOUDI , BEHROOZ JAMSHIDI MOGHADAM , JAVAD ABOLFAZLI ESFAHANI , MOHAMMADMOJTABA NOURI

Abstract: Various parameters affect the pump performance in which blade number, blade angle, outlet diameter, and volute shape are the most important. In this paper the performance of pumps with different impellers containing blade number and different volute shape containing circular-elliptical and rectangular is evaluated. In this study four different blade numbers 5, 6, 7, and 8 are modeled and two different rectangular and circular-elliptic volute shapes are also studied. Incompressible Navier-Stokes equations over a hybrid grid is solved by commercial software package Fluent. Rotational zone will be simulated by moving referenceframe method. For each impeller, the flow pattern and pressure distribution are calculated and finally the head and efficiency curves are compared and discussed. The results show that by increasing the blade numberthe head increase and efficiency decrease slightly. Also circular-elliptic volute shows better performance especially in higher flow rates than the rectang

Keywords: centrifugal pump, blade number, volute shape, moving reference frame, Fluent

Pages: 35 - 39 | DOI: 10.15224/978-1-63248-002-6-86

9. VERSATILE APPLIED FOR AGRICULTURAL ROBOT VEHICLES

Authors: T.BALAJI , K.VELMURUGAN

Abstract: This project is intended at creating a customized robotic vehicle or a platform, which can be useful for a multitude of applications. The proposed robotic vehicle fundamentally makes use of technologies like GPS and ZIGBEE/GSM, in addition to using an on board microcontroller and the drives and motors to race the vehicle. The vehicle can be adjure from a remote location, to certainly go from one point to another in terms of the GPS coordinates. So it is very important for us to advance the standard of our vitality in the future by using embedded system. This robotic vehicle once assemble can be useful for many assorted applications, like autonomous agricultural vehicles, video and audio surveillance, Motion detection in remote locations, for detection of hazardous conditions like nuclear radiations or poisonous gases in remote locations, communication jamming in remote locations etc. In this assignment an agricultural application like seeding or obstacle monitoring will be demonstrated

Keywords: remote, locations, communication, jamming

Pages: 40 - 44 | DOI: 10.15224/978-1-63248-002-6-87

10. THE MODELLING OF AN AUTONOMOUS TRIPLE MODE VEHICLE

Authors: G V SAI YESWANTH , R KARTHIKEYAN , SAKSHI SINGH

Abstract: This paper presents the modelling of a novel autonomous Triple Mode Vehicle. The presented design satisfies the dimensional and material constraints for a vehicle which can maneuver on land, water and underwater. This autonomous vehicle can be used for surveillance with the help of RADAR and its location can be tracked using Global Positioning System. Using RADAR we present the resulting amplitude variation withthe distance of object from the source.

Keywords: Triple Mode Vehicle, RADAR, Navigation.

Pages: 45 - 48 | DOI: 10.15224/978-1-63248-002-6-88

11. DESIGN AND ANALYSIS OF CHECK VALVES USED IN HYDRAULICS

Authors: ABHISHEK H.V , MANDARA YOGARAJ , SHANMUKHA NAGARAJ , SRIRANJINI.K.S

Abstract: A hydraulic check valve is a device that is installed to keep fluid from flowing backwards through the valves. Hydraulic check valves do not require any external activation; instead contain a mechanism that moves according to the flow of fluid through the valves. Hydraulic check valves are zero leakage devices, which can be used in locking hydraulic systems. When the fluid flows forward towards the valve, the mechanism allows it flow, whereas when the fluid stops flowing the mechanism plugs up the valve opening so that the fluid cannot flow backwards This project work is addressed to analyze the check valve under static and thermal load conditions. The pressure of 48.26Mpa has showed the check valve design is safe by obtaining factor of safety 3.15 under static load conditions respectively. Preheating the component from room temperature 250C to 400C at temperature of 71.10C and pressure 48.26Mpa has showed the check valve design is safe by obtaining factor of safety 3.022 under thermal

Keywords: forward, towards, valve, the mechanism, locking, hydraulic, systems, fluid, flows

Pages: 49 - 53 | DOI: 10.15224/978-1-63248-002-6-89

12. ANALYSIS OF COLD EXPANDED FASTENER HOLES- FEM APPROACH

Authors: MAANASA BHAT , PAURAV SARDESHMUKH

Abstract: Pre Stressing is a process of introducing residual compressive stresses zone around fastener holes which minimizes adverse effects of cyclic tensile stresses and retards the growth of fatigue cracks originating from the material flaws or surface imperfections. The present investigation is aimed at optimizing the inter hole distance between two adjacent cold expanded holes on a plate, limiting deformation of the material between holes to the elastic range by applying stress below the compressive yield strength of the material. It is found that ratio of central distance between holes to diameter of the holes (C/D) has a significant effect on the stress contours induced for a given percentage of expansion. The plate is modelled as a thick cylinder and equations are derived for radial stress. Graphs for these equations are plotted in MATLAB. ANSYS is used to conduct finite element analysis (FEA) of the cold expanded Mild Steel plate with two holes. To find the optimum centre distance betwe

Keywords: relationship, C/D , percentage, expansion , analyzed, optimizing, percentage

Pages: 54 - 58 | DOI: 10.15224/978-1-63248-002-6-90

13. APPLICATION OF SOME CHAOTIC SIGNAL PROCESSING TOOLS FOR THE DIAGNOSIS OF ROTOR-TO-STATOR RUB IN ROTATING MACHINERY

Authors: COLIN HENG CHANGJIE , JAWAID I. INAYAT-HUSSAIN

Abstract: This paper reports on the application of correlation dimension D2,largest Lyapunov exponent ʎ1 and maximum approximate entropy ApEtl max to diagnose the severity of rotor-to-stator rub in rotating machinery. The method of time delay was employed to reconstruct the vibration signal obtained from numerical simulation of a Jeffcott rotor subjected to rotor-to-stator rub. Numerical results showed clear correlation between the increase of rub severity with the invariant quantities,D2,ʎ1 and ApEtl max,investigated in this work.

Keywords: Correlation dimension, largest Lyapunov exponent, maximum approximate entropy, rotor-to-stator rub, time delay, attractor reconstruction, Jeffcott rotor

Pages: 59 - 64 | DOI: 10.15224/978-1-63248-002-6-117

14. HEAT TRANSFER AUGMENTATION FOR THE CAR RADIATOR BY USING NANOFLUID IN

Authors: ADNAN M. HUSSEIN , G.L. MING , K. KADIRGAMA , R. A. BAKAR

Abstract: The adding solid nanoparticles to liquids are significant topics to augment heat transfer for many industrial applications in the last years. This article included the friction factor and forced convection heat transfer of SiO2 nanoparticle suspended to water as a base fluid into a car radiator experimentally. Four different concentrations of nanofluids in the range of 1 to 4vol. % have been used. The flow rate changed in the range of 1 to 5 LPM to get Reynolds number with the range of 250 to 2000. The results showed that the friction factor decreases with an increase in flowrate and increase with increasing in volume concentration. Furthermore, the inlet temperature to the radiator has insignificantly affected to the friction factor. Likewise, the heat transfer increases with increasing in flowrate, nanofluid volume concentration and inlet temperature. Meanwhile, application of SiO2 nanofluid with low concentrations can enhance heat transfer rate up to 30% as a comparison with pure wa

Keywords: Laminar, Nanofluid, Heat transfer, Car radiator, CFD.

Pages: 65 - 71 | DOI: 10.15224/978-1-63248-002-6-118